I have this set:
https://www.amazon.com/Titan-Scraper-Double-Plastic-Blades/dp/B004XJE7TY/ref=sr_ph_1?ie=UTF8&qid=1526404779&sr=sr-1&keywords=scraper
…and I just tried using one. It’s not as fast as my fingernail. Maybe it could be with practice… but tape is SO much faster. I’m not talking small weedy bits on a larger piece, I am talking about tiny independent pieces. Just picking them up and setting the blade and peeling both sides is very slow.
I just did a run using painters tape, and it worked well. Thanks @brokendrum.